DENVER (AP) - A substitute Jefferson County schools driver faces two counts of child abuse stemming from an altercation on a bus.

The Denver Post (http://tinyurl.com/oba5bz7 ) and KMGH-TV (http://tinyurl.com/lnup739 ) report that according to a Lakewood police summons, staff asked a disruptive 12-year-old boy to get off 62-year-old David Blanchard’s bus after school on Friday. The student was later allowed to get back on, but then yelled at Blanchard. The driver pinned the boy to a seat, grabbing him by the throat, according to witnesses. Blanchard then pinned a second student who tried to intervene.

The first student, who may be charged with harassment, suffered scratches. The student who tried to intervene was uninjured.